On Thu, Jul 20, 2023 at 03:45:57PM +0200, Ard Biesheuvel wrote: > Instead of relying on raising the TPL to protect the critical sections > that manipulate the global bitmask that keeps track of bounce buffer > allocations, use compare-and-exchange to manage the global variable, and > tweak the logic to line up with that. > > Given that IoMmuDxe implements a singleton protocol that is shared > between multiple drivers, and considering the elaborate and confusing > requirements in the UEFP spec regarding TPL levels at which protocol > methods may be invoked, not relying on TPL levels at all is a more > robust approach in this case. > > Cc: Gerd Hoffmann <kra...@redhat.com> > Cc: Jiewen Yao <jiewen....@intel.com> > Cc: Michael Brown <mc...@ipxe.org> > Link: https://bugzilla.redhat.com/show_bug.cgi?id=2211060 > Signed-off-by: Ard Biesheuvel <a...@kernel.org>
Looks good to me. What is the status? Merged? Or waiting for testing still? If so I can create a test build with the patch and ask our QE department to check it. take care, Gerd -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#107946): https://edk2.groups.io/g/devel/message/107946 Mute This Topic: https://groups.io/mt/100256049/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
